Conclusive write operation dispersed storage network frame

Abstract

A method begins by a processing module generating a payload of a dispersed storage network frame regarding a conclusive write request operation by generating one or more slice name fields of a payload to include one or more slice names corresponding to one or more write commit responses of a write request operation, wherein the conclusive write request operation is a conclusive phase of the write request operation. The method continues with the processing module generating one or more slice revision numbering fields of the payload, wherein each slice revision numbering field includes a slice revision number corresponding to an associated slice name of the one or more slice names. The method continues with the processing module generating a protocol header of the DSN frame by generating a payload length field of the protocol header to include a payload length and generating remaining fields of the protocol header.

What is claimed is: 
     
       1. A method for execution by a computer to perform a conclusive write request operation, the method comprises:
 generating a payload of a dispersed storage network (DSN) frame regarding the conclusive write request operation by:
 generating one or more slice name fields of the payload to include one or more slice names corresponding to one or more write commit responses of a write request operation, wherein the conclusive write request operation is a conclusive phase of the write request operation; and 
 generating one or more slice revision numbering fields of the payload, wherein each slice revision numbering field includes a slice revision number corresponding to an associated slice name of the one or more slice names; and 
 
 generating a protocol header of the DSN frame by:
 generating a payload length field of the protocol header to include a payload length that represents length of the one or more slice name fields and length the one or more slice revision numbering fields; and 
 generating remaining fields of the protocol header. 
 
 
     
     
       2. The method of  claim 1  further comprises:
 outputting the DSN frame in order of the protocol header and one or more slice field pairs, wherein each of the one or more slice field pairs includes, in order, a slice name field of the one or more slice name fields and a slice revision numbering field of the one or more slice revision numbering fields, wherein the slice revision numbering field is associated with the slice name field. 
 
     
     
       3. The method of  claim 1 , wherein generating remaining fields of the protocol header comprises at least one of:
 generating an operation code field to indicate a finalize write request operation when a threshold number of the one or more write commit responses have been received; 
 generating a protocol class field to indicate a protocol class for the finalize write request operation when the threshold number of the one or more write commit responses have been received; and 
 generating a protocol class version field to indicate a protocol class version for the finalize write request operation when the threshold number of the one or more write commit responses have been received. 
 
     
     
       4. The method of  claim 1 , wherein generating remaining fields of the protocol header comprises at least one of:
 generating the operation code field to indicate an undo write request operation when a threshold number of the one or more write commit responses have not been received; 
 generating the protocol class field to indicate a protocol class for the undo write request operation when the threshold number of the one or more write commit responses have not been received; and 
 generating the protocol class version field to indicate a protocol class version for the undo write request operation when the threshold number of the one or more write commit responses have not been received. 
 
     
     
       5. The method of  claim 1 , wherein the generating the one or more slice names comprises at least one of:
 receiving the one or more slice names; and 
 selecting the one or more slice names from a slice names list. 
 
     
     
       6. The method of  claim 1  further comprises:
 generating a plurality of DSN frames regarding the conclusive write request operation, wherein the plurality of DSN frames includes the DSN frame. 
 
     
     
       7. A method for a computing device to perform a conclusive write response operation, the method comprises:
 generating a protocol header of a dispersed storage network (DSN) frame by:
 generating an operation code field to indicate the conclusive write response operation; 
 generating a request number field to include a request number associated with a conclusive write request operation; and 
 generating remaining fields of the protocol header. 
 
 
     
     
       8. The method of  claim 7 , wherein generating the operation code field of the protocol header further comprises at least one of:
 generating the operation code field to indicate a finalize write response operation when a threshold number of the one or more write commit responses have been received; 
 generating the operation code field to indicate an undo write response operation when the threshold number of the one or more write commit responses have not been received; and 
 extracting an operational code from a corresponding conclusive write request message. 
 
     
     
       9. The method of  claim 7 , wherein generating the remaining fields of the protocol header comprises at least one of:
 generating a protocol class field to indicate a protocol class for the conclusive write response operation; 
 generating a protocol class version field for the conclusive write response operation; 
 generating a payload length field of the protocol header to include a predetermined payload length value; and 
 generating a request/response field to indicate a response message. 
 
     
     
       10. The method  claim 9  further comprises:
 outputting, in order, the protocol class field, the protocol class version field, the operation code field, the request/response field, the request number field, and the payload length field. 
 
     
     
       11. A computer comprises:
 an interface; 
 a memory; and 
 a processor operably coupled to the interface and to the memory, where the processor is operable to:
 generate a payload of a dispersed storage network (DSN) frame regarding a conclusive write request operation by:
 generating one or more slice name fields of the payload to include one or more slice names corresponding to one or more write commit responses of a write request operation, wherein the conclusive write request operation is a conclusive phase of the write request operation; and 
 generating one or more slice revision numbering fields of the payload, wherein each slice revision numbering field includes a slice revision number corresponding to an associated slice name of the one or more slice names; and 
 
 generate a protocol header of the DSN frame by:
 generating a payload length field of the protocol header to include a payload length that represents length of the one or more slice name fields and length the one or more slice revision numbering fields; and 
 generating remaining fields of the protocol header. 
 
 
 
     
     
       12. The computer of  claim 11 , wherein the processor further functions to:
 output, via the interface, the DSN frame in order of the protocol header and one or more slice field pairs, wherein each of the one or more slice field pairs includes, in order, a slice name field of the one or more slice name fields and a slice revision numbering field of the one or more slice revision numbering fields, wherein the slice revision numbering field is associated with the slice name field. 
 
     
     
       13. The computer of  claim 11 , wherein the processor functions to generate the remaining fields of the protocol header by at least one of:
 generating an operation code field to indicate a finalize write request operation when a threshold number of the one or more write commit responses have been received; 
 generating a protocol class field to indicate a protocol class for the finalize write request operation when the threshold number of the one or more write commit responses have been received; and 
 generating a protocol class version field to indicate a protocol class version for the finalize write request operation when the threshold number of the one or more write commit responses have been received. 
 
     
     
       14. The computer of  claim 11 , wherein the processor functions to generate the remaining fields of the protocol header by at least one of:
 generating the operation code field to indicate an undo write request operation when a threshold number of the one or more write commit responses have not been received; 
 generating the protocol class field to indicate a protocol class for the undo write request operation when the threshold number of the one or more write commit responses have not been received; and 
 generating the protocol class version field to indicate a protocol class version for the undo write request operation when the threshold number of the one or more write commit responses have not been received. 
 
     
     
       15. The computer of  claim 11 , wherein the processor functions to generate the one or more slice names by at least one of:
 receiving, via the interface, the one or more slice names; and 
 selecting the one or more slice names from a slice names list. 
 
     
     
       16. The computer of  claim 11 , wherein the processor further functions to:
 generate a plurality of DSN frames regarding the conclusive write request operation, wherein the plurality of DSN frames includes the DSN frame. 
 
     
     
       17. A computer comprises:
 an interface; 
 a memory; and 
 a processor operably coupled to the interface and to the memory, where the processor is operable to:
 generate a protocol header of a dispersed storage network (DSN) frame by:
 generating an operation code field to indicate a conclusive write response operation; 
 generating a request number field to include a request number associated with a conclusive write request operation; and 
 generating remaining fields of the protocol header. 
 
 
 
     
     
       18. The computer of  claim 17 , wherein the processor further functions to generate the operation code field of the protocol header by at least one of:
 generating the operation code field to indicate a finalize write response operation when a threshold number of the one or more write commit responses have been received; 
 generating the operation code field to indicate an undo write response operation when the threshold number of the one or more write commit responses have not been received; and 
 extracting an operational code from a corresponding conclusive write request message. 
 
     
     
       19. The computer of  claim 17 , wherein the processor functions to generate the remaining fields of the protocol header by at least one of:
 generating a protocol class field to indicate a protocol class for the conclusive write response operation; 
 generating a protocol class version field for the conclusive write response operation; 
 generating a payload length field of the protocol header to include a predetermined payload length value; and 
 generating a request/response field to indicate a response message. 
 
     
     
       20. The computer  claim 19 , wherein the processor further functions to:
 output, via the interface, in order, the protocol class field, the protocol class version field, the operation code field, the request/response field, the request number field, and the payload length field.